[inspector] restore provisional breakpoints smarter

src/debug/debug-interface.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_DEBUG_DEBUG_INTERFACE_H_
 #define V8_DEBUG_DEBUG_INTERFACE_H_
 
 #include <functional>
 
 #include "include/v8-debug.h"
@@ skipping 121 matching lines @@
   MaybeLocal<String> SourceURL() const;
   MaybeLocal<String> SourceMappingURL() const;
   MaybeLocal<Value> ContextData() const;
   MaybeLocal<String> Source() const;
   bool IsWasm() const;
   bool IsModule() const;
   bool GetPossibleBreakpoints(const debug::Location& start,
                               const debug::Location& end,
                               bool restrict_to_function,
                               std::vector<debug::Location>* locations) const;
-
- private:
-  int GetSourcePosition(const debug::Location& location) const;
+  int GetSourceOffset(const debug::Location& location) const;
+  v8::debug::Location GetSourceLocation(int offset) const;
 };
 
 // Specialization for wasm Scripts.
 class WasmScript : public Script {
  public:
   static WasmScript* Cast(Script* script);
 
   int NumFunctions() const;
   int NumImportedFunctions() const;
 
@@ skipping 101 matching lines @@
   ~Coverage();
 
  private:
   explicit Coverage(i::Coverage* coverage) : coverage_(coverage) {}
   i::Coverage* coverage_;
 };
 }  // namespace debug
 }  // namespace v8
 
 #endif  // V8_DEBUG_DEBUG_INTERFACE_H_